'The device to maintain a safe and relaxed, but also save the cost of tens of thousands of yuan a year. 'Recently, sichuan bamboo coal group of iron in shannan coal mine bottom valve water diversion device was successfully developed, thoroughly solves the problem the main drainage pump maintenance, to ensure the mine safety production. The mine mine east, west wing, a total of 12 sets of main drainage pump, adopt the way of a bottom Industrial Valves to fill the start, each year about six main drainage pump was replaced by bottom valve damage, invested capital was about 1. 80000 yuan. In daily operation, the damage of bottom valve pump often happen to the situation of the irrigation water diversion, almost in 2 to 4 times a month bottom valve leakage fault, maintenance workload is bigger, seriously affected the normal mine drainage, once encountered during the rainy season, caused a serious threat to mine safety. Centrifugal pump without drainage mainly include vacuum pump, set the vacuum tank bottom valve in two ways. The engineering technology ( Valves, pumps) Comparison and analysis, vacuum tank is compared with the vacuum pump has the advantages of low capital investment, only one-time investment cost of raw materials, process cost, no maintenance, etc. But because no ready-made device reference, engineering and technical personnel, calculation, after repeated data access by setting the vacuum tank, using the self-priming pump for without bottom valve, the purpose of automatic water diversion finally designed a set of water without bottom valve device. After three days of processing production, the device is in the west wing 0 level water pump installation, one-time successful commissioning. At present, the equipment running well, not only improve the efficiency of the pump drainage, but also greatly reduces the power consumption, saving the costs.
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